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NET INCOME PER COMMON SHARE | 3 Months Ended
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Mar. 31, 2021
Earnings Per Share [Abstract] |
NET INCOME PER COMMON SHARE |
1 9. | NET INCOME PER COMMON SHARE:
The Company computes earnings per share in accordance with ASC Topic 260, Earnings per Share, which requires earnings per share (EPS) for each class of stock to be calculated using the two-class method. The two-class method is an allocation of income between the holders of common stock and the Company's participating security holders. Under the two-class method, income for the reporting period is allocated between common shareholders and other security holders based on their respective participation rights in undistributed income. Unvested share-based payment awards that contain non-forfeitable rights to dividends or dividend equivalents are participating securities and, therefore, are included in computing earnings per share pursuant to the two-class method. Basic net income per common share is computed by dividing net income allocated to common shareholders by the weighted-average number of shares of common stock outstanding for the period excluding unvested restricted stock units and performance units. Net income allocated to the holders of the Company's unvested restricted stock awards is calculated based on the shareholders proportionate share of weighted average shares of common stock outstanding on an if-converted basis. For purposes of determining diluted net income per common share, basic net income per share is further adjusted to include the effect of potential dilutive common shares outstanding, including stock options, restricted stock units and performance units, and the impact of shares to be issued under the E mployee Stock Purchase Plan. The following table is a reconciliation of net income and the shares used in calculating basic and diluted net income per common share for the three months ended March 31, 2021 and 2020 (in thousands, except share and per share data):
| Three Months Ended March 31, |
| 2021 |  |  | 2020 |
Numerator: |  |  |  |  |  |  |
Net income | $ | 51,687 |  |  | $ | 38,155 |
Adjustment for Basic EPS: |  |  |  |  |  |  |
Earnings allocated to unvested shareholders |  | (358 | ) |  |  | (339 | )
Adjusted net income | $ | 51,329 |  |  | $ | 37,816 |
Denominator: |  |  |  |  |  |  |
Weighted average common shares outstanding – Basic |  | 47,267,921 |  |  |  | 47,093,033 |
Effect of dilutive shares: |  |  |  |  |  |  |
Common stock equivalents arising from stock options and ESPP |  | 165 |  |  |  | 441 |
Restricted stock awards and units and performance units |  | 61,618 |  |  |  | 29,355 |
Weighted average common shares outstanding – Diluted |  | 47,329,704 |  |  |  | 47,122,829 |
Net income per common share: |  |  |  |  |  |  |
Basic | $ | 1.09 |  |  | $ | 0.80 |
Diluted | $ | 1.08 |  |  | $ | 0.80 |
For the three months ended March 31, 2021 and 2020, the combined effects of unvested restricted stock awards, restricted stock units, performance unit awards and stock options of none and 14,112, respectively, were excluded from the calculation of diluted EPS as their impact would have been antidilutive.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109243012&loc=SL65017193-207537 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3630-109257 + Details
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